Noiz did in fact just bite his wound. Once Squalo offers his gloved hand to shake, Noiz offers his left as well. Aside from the matter of the two nails, Squalo may notice that his fingers have a number of thin, long healed scars on them. And of course the thin white bandages wrapped around both hands from knuckle down to past the wrists.

"Noiz." The coolness of Squalo's "hand" goes unnoticed since he's really bad at feeling differences in temperature unless using his tongue. The hardness, on the other hand. Noiz tightens his grip during the shake. "Is your hand fake?"